Background: This study aimed to determine the role of core self-evaluation and job autonomy on nurses' job performance in Sanandaj public hospitals.

Materials and Methods: This study was a descriptive and correlational one. The study population consisted of the nurses who work in Sanandaj city public hospitals, selected 213 people using stratified random sampling in 2016. In order todata gathering, Paterson job performance scale (1990), Judje et al. core self-evaluation scale (2003) and Gunster job autonomy (1989) were used. Pearson correlation coefficient, regression analysis and multivariate variance analysis (MANOVA) were performed to data analysis.

Results: Study results revealed that mean score and SD of core self-evaluation, job autonomy and job performance were 43.84 ± 5.52, 42.65 ± 10.26 and 52.81 ± 5.85 respectively. So that, mean of core self-evaluation and job performance were desirable and job autonomy was at the intermediate level. Also, there was a significant association between core self-evaluation and nurses' performance which this variable was able to predict 15% of job performance variance. While, there was no significant association between job autonomy and nurses' job performance. Also, the study results revealed that there was a significant difference between core self-evaluation and job performance among male and female nurses.

Conclusion: Based on study results, core self-evaluation has a significant association with job performance which can predict it among nurses.